Historical information
The West Kiewa Tunnel (tailrace tunnel) was commenced from both ends in 1947. Very difficult conditions were encountered in the driving of this tunnel and this meant the immediate provision of support and later the lining of the tunnel with concrete. Work proceeded steadily and the breakthrough of the two headings occurred on 22nd July, 1950.
Significance
This historical photograph shows in detail the amount of work necessary to stabilise and support the tunnel walls before lining with concrete. No solid rock was found and the tunneling proceeded through decomposed boulders, gravel and clay, hence the necessity for support and concreting.
Physical description
Black and white photograph showing the timber support, prior to lining with concrete, in the West Kiewa tunnel.
Inscriptions & markings
Timbering in West Kiewa Tunnel